Examine source code of Reddit Shortcut

{
  "manifest_version": 2,
  "name": "r/ Reddit Shortcut",
  "version": "1.0",
  "description": "Type r/subreddit in the address bar to jump straight to that subreddit.",
  "icons": {
    "48": "icon.png"
  },
  "omnibox": {
    "keyword": "r"
  },
  "background": {
    "scripts": [
      "background.js"
    ],
    "persistent": false
  },
  "permissions": [
    "tabs"
  ],
  "browser_specific_settings": {
    "gecko": {
      "id": "reddit-shortcut@local",
      "strict_min_version": "109.0",
      "data_collection_permissions": {
        "required": [
          "none"
        ],
        "optional": []
      }
    }
  }
}